Stove.



.1. STAFFORD.

STOVE,

MPLICATION FILED APR.24.19|@.

lntcntvd Sept. 12, 1916.

I ...iw/isili! W. J. STAFFORD.

STOVE.

APPLICATION F|LED APR. 24. 191e.

Pzltnted Sept. 12, 1916.

2 SHEETS--SHEET 24.

m fl rw) @Hoznma indices.

WILLIAM JOHN STAFFORD, 0F QUINCY, ILLINOIS.

STOVE.

Specification of Letters Patent.

Patented Sept. 12, 1916.

Application led April 24, 1916. Serial No. 93,213.

T 0 all whom it may concern:

Be it known that I, WILLIAM J. STAFFORD, a citizen of the United States, residing at Quincy, in the county of Adams and State of Illinois, have invented certain new and useful Improvements in Stoves; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in cooking stoves of the general class shown and described in my copending U. S. application, Serial No. 94016, filed April 27, 1916, no claim being herein laid to the subject matter of said application.

One object of the invention is to provide an improved shield plate for covering the gaseous or liquid fuel burner when solid fuel is being used and to so construct said shield plate as to allow it to serve as a damper to obstruct the passage of `heat and smoke through one of the flues of the stove when the latter is burning coal, wood or the like.

lVith the foregoing general objects in View, the invention resides in certain novel features of construction and in unique combinations of parts to be hereinafter fully described and claimed, the descriptive matter being supplemented by the accompanying drawings which constitute a part of this application and in which:

Figure 1 is a rear elevation of the improved stove; Fig. 2 is a central vertical longitudinal section thereof; Fig. 3 is a horizontal section taken substantially on `the planes indicated by the linef3-3 of Fig. 2; Fig. 4 is an end elevation; Fig. 5 is a perspective view showing the connections between the dampers and the shield plate; and Fig. 6 is a detail horizontal sectional view taken on the plane indicated by the line 6--6 of Fig. 2.

In specifically' describing the construction shown in the drawings above briefly described, similar characters will be placed on corresponding parts throughout the several views and reference will be herein made to "he numerous elements by their respective To this end, the numeral 1 designates an appropriate base preferably having legs '2, said base supporting thereon the bottom 3 of the shell 4 of the stove, said shell having at one end of its top 5 a grating 6 disposed over gas burners 7 which are housed in a compartment 8. The remainder of the top 5 has formed therein a number of openings closed by lids 9 of common construcytion 17 of a flue, one end of this flue extending between the partition 13 and the adja- Icent end of the oven as indicated at 18 while the other end 19 thereof extends between the remaining end wall 20 of the shell 4 and the opposite end of the oven. As shown, the laterally extending portion 14 of partition 13 is spaced above-'the top of the o ven 15 and the space between these parts therefore serves as a continuation of the flue and insures that heat passing upwardly in the portion 18 thereof shall travel a considerable distance along the top of the oven before being discharged into the space 16.

The rear wall of the shell 4 is provided with an outlet opening 21 leading from the space 16 into a hood or the like 22 from which an ordinary stove pipe will extend, said opening 21 being equipped with a damper 23 mounted on a rock shaft 24 which extends beyond the hood 22 as shown in Fig. V3. A short transverse wall 25 rises from the inner end of the laterally extending portion 14 of the partition 13 and extends to the top 5, said wall leading from the` rear side of the shell to a longitudinally disposed partition 26 which extends between the top 5 and the top of the oven, said partition 26 terminating against the inner Wall of the compartment 8. A damper 27 extends from the inner end of the partition 25 to the front wall of the stove, said damper being carried by a rock shaft 28 which projects beyond the rear side of said stove. An additional damper 29 is pivoted within a gap 30 which exists between the partition 26 and the upper end of an L-shaped partition 31, the latter extending vertically between the end 20 of the shell and the adjacent end of the oven and continuing horizontally beneath said ,oven to a point between the ends thereof. The damper 29 is provided with an operating rod 32 leading through the front of the st ove Wherebysaid damper may be actuated at will.

A burnerl 33 is disposed at the intersection of the portions 17 and 18 of the flue above described, said burner being adapted in the present embodiment of the invention to burn natural or artificial gas although it will be understood that liquid fuel could Well be consumed at this point were the burner of proper construction. When the burner 33 is in operation,pthe dampers 27 and 23 will be closed, whereupon the heat from said burner will travel around the oven 15 and will be discharged into the space 16. From this space the poisonous gases may escape into the hood 22 through a suitable vent 34, said vent also establishing communication between said hood and the compartment 8.

When solid fuel is to be burned in the firebox 11, the dampers 23 and 27 will be opened. If the damper 29 now remains in open position, the smoke and heat from the fire-box may pass horizontally over the oven in advance of the partition 26 and then rearwardly to the opening 30 to be discharged through the outlet 21. However, when damper 29 isclosed theheat must travel downwardly around the lower end of the partition 19 and then upwardly in rear of said partition before passing through the outlet 21. This insures that the oven 15 be effectively heated for baking purposes.

In order to prevent soot and the like from accumulating upon the burner 33 when the fire-box 11 is in use, and at the same time to prevent the passage of the soot-laden smoke through the portion 18 of the flue, a pivoted yshield plate 35 is provided. This plate is carried by a transverse rock shaft 36 which projects rearwardly from the stove shell, said shaft also extending forwardly from said shell and being squared at 37 for the application of a suitable tool whereby said shaft may be rocked to move plate 35 from one position to another. When the, burner 33 is in use the plate 35 will be swung downwardly to substantially a horizontal position and will be received in a transverse depression 38 with which the bottom 3 is provided, said plate having adjacent its free edge a laterally projecting flange 39 extending throughout its length, which flange, when the plate 35 is lowered, serves to partially close the horizontal portion 17 of the flue, thus rendering it more difficult for heat to pass from the burner through this portion. This insures that an equal quantity of heat will be supplied to both portions 17 and 18, the latter having a smaller cross sectional area than the former.

When the use of the burner 33 is no longer needed, the plate 35 will be swung to the dotted line position shown in Fig. 2, in which position the free edge of said plate will abut a flange 40 which depends from the adjacent corner of the oven 15. With the parts disposed in this position, the flange 39 overlaps an additional flange 41 which extends laterally from the partition 13 The plate 35 when positioned in this manner will effectively prevent the accumulation of soot and the like upon the burner 33 and said plate and the flange 39 will now serve as a damper to prevent the passage of heat through the portion 18 of the flue. y

The burner 33 may be mounted in any appropriate manner but the bottom 3 of the shell 4 is preferably formed with a transversely extending slot 42 between the shaft 36 and the partition 13, one wall of said slot having notches 43. The burner 33 has formed thereon laterally projecting lugs 44 which, when said burner is inserted into the slot 42 pass upwardly through the notches 43. The burner may then be shifted longitudinally to cause said lugs to overlie the portion of the bottom between the notches whereupon it will be supported in operative position (see Fig. 6). Although this means of supporting the burner 33 is simple and efficient, it will be readily understood that any preferred structure may be provided for this purpose.

The burner 33 is provided with an inlet neck 45 which preferably extends obliquely from the center of said burner through 'an opening in the base 1, said neck being shown as provided with a bracket 46 wh1ch 1s bolted to the bottom 3 although any other preferred means may be employed for supporting the same. The outer end of the neck 45 is equipped with an air mixer 47 and 1s supplied with gas from a pipe 48.

In order to automatically position the dampers 23 and 27 for burning solid fuel upon moving of plate 35 to its uppermost position and for closing said dampers when said plate is again lowered, connections are provided between the latter and the former. In the present embodiment of the invention the rock shaft 36 of plate 35 has on lts rear end a crank 49 pivoted to the lower end' of a link 50, the upper end of the latter bemg pivotally connected to a crank arm 51 on the shaft 28 of the damper 27. The shaft 28 is provided with an additional crank arm 52 extending oppositely from 51 and loosely connected by a link .53 with a crank arm 54 extending rearwardly from the projecting end of the rock shaft 24 which extends from the damper 23. By this arrangement, when the plate 35 is moved to either one of lts positions by the application of a tool to the squared portion 37 of its shaft 36, the dampers 23 and 27 will be properly disposed.

From the foregoing, taken in connectlon with the accompanylng drawings, it will be obvious that I have rovided ra stove which regardless of its slmplicity of construction will be highly eliicient and durable. Particular emphasis is laid upon the plate 35 and its (lange 39, since as above described this construction is of use either when burning solid fuel or when using the burner 33.

. In conclusion, I will state that although I have shown and described certain specific details for accomplishing probably the best results, numerous changes may be made within the scope of the invention as claimed without sacrificing the main advantages thereof.

I claim 1. In a. convertible stove, an oven spaced downwardly from the top of said stove, a fire-box in dampered communication with the space above said oven, a flue extending beneath and along the ends of said oven, said flue communicating at its ends with the aforesaid space, a burner located in one angle of said flue.l and a shield plate pivoted at one edge adjacent the bottom of the flue in close proximity to said burner said plate lying horizontally when said burner 1s in use but being adapted to swing over said burner when solid fuel is being consumed in the fire-box, said plate then serving to close the flue and at the same time to prevent the Aaccumulation of soot `and the like on the burner.

2. In a convertible stove, an oven spaced downwardly from the top of said stove, a lire-box Vin dampered communication with the space above said oven, a flue extending beneath and along the ends of said oven, one end of said flue being interposed between the inner end of the oven and the fire-box and being contracted while both ends of said flue communicate with the aforesaid space, a burner at the intersection of the contracted portion of the flue and a horizontal portion thereof, and a shield plate pivoted at oneedge adjacent the burner, said plate lying horizontally upon the bottom of the flue when the burner is in'operation and having a laterally extending flange which then partially closes said horizontal part of theflue to prevent the escape of heat therethrough too readily, said plate being adapted to be swung to a vertical position when solid fuel is beingconsumed in the firebox, whereupon the free edge of said plate is adapted to be disposed adjacent'the bottom of the oven while the flange of said plate will be positioned across the contracted end of the flue, said plate and flange thus serving to prevent the passage of heat through said end of the flue and at the same time to prevent the accumulation of soot on the burner.

3. In a convertible stove, an oven spaced downwardly from the top of said stove, a firebox in dampered communicationV with the space above said oven, a flue extending beneath and upwardly along the ends of said oven, one end of said flue being interposed between the oven and fire-box and being contracted, a burner disposed at the intersection of said contracted end of the flue with the horizontally extending portion thereof, the bottom of this portion having a transverse depression adjacent said burner, and a shield plate pivoted at one edge adjacent the burner and lying horizontally in said depression when the burner is inA use, said plate having a laterally extending flange which then serves to prevent the escape of heat too readily through the horizontal portion of the flue, said plate being adapted to be swungto a vertical position .when solid fuel is being consumed in the fire-box, the free edge of said Plate being then adapted to be disposed adj acent the bottom of the oven while the flange of said. plate extends across the contracted end of the flue said plate and .ange'thus prevent-A ing the passage of heat through the contracted end and also serving to prevent the accumulation of soot upon the burner.

In testimony whereofI have hereunto set my hand in presence of two subscribing witnesses.

IVILLIAM JOHN STAFFORD.

Witnesses:

FRED SwER'rRING, E. H. OsoRN. 

